# Sequencing Strategy — 01-2275

Works commence in the **South / South-East corner** with the stairs and pram ramps — the most complex, fixed-price items — then track north-west through exposed aggregate, then broom finish. This **front-loads the high-margin EA work** and keeps the crew progressing without doubling back.

## Starting point: S/SE corner

The stair structure (Hornsby Council Standard Pathway Steps) sits in the SE corner. Two pram ramps (2 × $550 each) are in proximity. **Sub-base and survey must be confirmed in this zone first** (RFIs A1 and A2 are blockers).

## Sequencing order — S/SE to North-West

| Phase | Activity | Area / Qty | Duration (est) | Notes |
|---|---|---|---|---|
| 1 | Stairs | 1 item — $12,850 | ~7 working days | Form 3 days, reo 3.5 days, pour 1 day. Confirm scope inclusions per RFI-B1 (tactile, anchor bolts) |
| 2 | Pram Ramps (×2) | 2 each — $550 ea | ~4 working days | Both ramps back-to-back while stair cure cycle completes |
| 3 | Exposed Aggregate — SE Zone | ~800 m² (≈5 pours) | ~1.5 weeks | Working SE upward. 5 pours @ 160 m²/day |
| 4 | Exposed Aggregate — Central Zone | ~800 m² | ~1.5 weeks | Pump access critical — confirm positioning with Solutions Plus |
| 5 | Exposed Aggregate — NW Zone | ~722 m² | ~1 week | Final EA panels. **Check RW11 status (R6) before forming adjacent panels** |
| 6 | Broom Finish — SE to NW | ~4,047 m² (≈25 pours) | ~8–9 weeks | Largest scope item. Maintain 160 m²/day minimum, target 180+ |
| 7 | Key Joints — concurrent | 1,284 m | Throughout job | Install as pavement progresses — never let joints fall >1 week behind pours |
| 8 | Rectifications & Make-Good | As required | Wks 19–21 | Defects, joint sealing, cleanup before handover |

## Why this order

1. **Highest-risk items first** (stairs, pram ramps) so any setting-out errors are caught before the bulk pavement starts
2. **High-margin EA before BF** — protects margin if programme slips later (BF can compress)
3. **S/SE → NW** matches sub-base handover sequence and traffic-control zones
4. **Key joints concurrent** — installing as pavements complete avoids a separate trip back to each zone
5. **3-week pure-contingency buffer** at end (Wks 22-24) absorbs weather + RW11 + sign-off delays without LDs